The Network (_NW) table contains all of the topological Transportation Elements
(Roads, Ferries, Address Area Boundaries Elements) within the MultiNet 
shapefile. In the table, there are two columns, F_ELEV and T_ELEV that contain 
the relative elevations at the start and end of the road links respectively.

By "dividing" or "splitting up", I assumed you meant to have the road links in 
different layers in your map file so the relative elevation of the road links 
follows the drawing order of the map. In the DATA directive following the 
CONNECTIONTYPE "postgis" and CONNECTION "host=servername dbname=databasename 
password=xxx user=xxx", you create your SQL statement using the values in the 
F_ELEV and T_ELEV columns:
-  value 0: represents  Ground Z Level (default)
-  values from -9 to 9: Level -9 to Level 9, resp. from Lowest to Highest Z 
Level 

Tele Atlas have a white paper available "Open Source Map Rendering Tutorial" 
(http://developerlink.teleatlas.com/documents.cfm?documentID=250) that covers 
GeoServer. Also, there is another white paper "Load Into PostgreSQL/PostGIS" 
(http://developerlink.teleatlas.com/pages/190_white_papers.cfm).

kind regards,

Edward

> Date: Sun, 15 Aug 2010 01:15:39 -0700
> From: [email protected]
> To: [email protected]
> Subject: [mapserver-users] RE: How to use tele atlas data to publish the      
> bridge structure?
> 
> 
> IF the Tele Atlas MultiNet product has a relative Z-level attribute for each
> of the road links ,which table does the attribute lied in? what is the name
> of the attribute? Could you give me a specific answer about how to use the
> related attribute to split up the Tele Atlas data ?
> -- 
> View this message in context: 
> http://osgeo-org.1803224.n2.nabble.com/How-to-use-tele-atlas-data-to-publish-the-bridge-structure-tp5422743p5424803.html
> Sent from the Mapserver - User mailing list archive at Nabble.com.
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